Re: Storage Time After Reclaiming
Segragation comes during the formation of the pile once the material has stopped moving no more segragation will occur. So there is no time limit for segragation.
In other words the method of pile formation will determine the amount of segragation you will get not the length of time the pile is there. ■
Gary Blenkhorn
President - Bulk Handlng Technology Inc.
Email: garyblenkhorn@gmail.com
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Offering Conveyor Design Services, Conveyor Transfer Design Services and SolidWorks Design Services for equipment layouts.
Re: Storage Time After Reclaiming
Dear Shri Somnath Kundu,
It seems you intend to create certain storage (few hour or shifts etc.) between the stockyard storage and consumption point.
You can have the appropriate method of storage. This intermediate storage (filling process) to be done in such a manner that there is least size segregation. As said before, once it is stored, there will not be size segregation during standstill storage. In case you are storing in silo / bunkers, then you have to select the appropriate angles of the outlet zone to create right type of flow pattern to avoid adverse effect on the size composition. That means silo filling and emptying process both to be taken in to consideration. If the flow pattern is selected properly, it will also improve the blending (mixing).
As for the power station, where continuity of boiler operation is of utmost priority, their practice is to keep finally available storage of 24 hours right near the consumption point (boilers). This means even if the coal does not arrive at boiler bunkers (silos) for 24 hours, the boiler operation and power generation will not be influenced.
You may choose such final storage method appropriate to your process and material.
Regards,
Ishwar G Mulani.
Author of Book : Engineering Science and Application Design for Belt Conveyors.
Author of Book : Belt Feeder Design and Hopper Bin Silo
Advisor / Consultant for Bulk Material Handling System & Issues.
Pune, India.
Tel.: 0091 (0)20 25871916
Email: parimul@pn2.vsnl.net.in ■
Re: Storage Time After Reclaiming
Thank you so much for your such kind of informative reply.Here, in my case daily reqiirement of material ( Iron ore fines, -12) almost 24000T.Due to restricted space available between Storage yard & plant, i am planing to store at least 8 hr ( One shift) storage ie 8000T Intermediate storage building. ■
Storage Time
Dear Mr. Kundu,
You are correct. We also keep 8-10 hours storage. But if space permit we sometimes go for 16-18 hours.
Regards.
A.Banerjee ■
Storage Time After Reclaiming
What kind of ore? Ore with clay content (In Indian context ore with Limonite / Goethite) becomes sticky when wet. You need to extract 1000 THP from Bins. Good luck. Follow steel plant practice (feeding sinter plant). Flow characteristics ore ore will give you a guidence. ■
Storage Time after Reclaiming
In my new project of 6.5 MT Iron ore beneficiation plant,we have kept provision of two no iron ore fines bed before Beneficiation plant.In the fines bed, material(Iron ore,-12 m.m) comes from different mines by rake & after unloading in wagon tippler/Track hopper it finally reaches in the yard through a series of Belt converors. Material stacking is done by Twin boom stacker ( Chevron layer) whereas reclaiming done by Barrel type blender reclaimer to achieve better homogenious mixing.Since the beneficiation plant is 24 hour running,reclaimer may be designed for 24 hour continous opeartion?However we have planing for intermediate staorage for few hours in between the yard & Beneficiation plant keeping in mind of Reclaimer brakedown. My question is what should be the ideal storage time in the intermediate bunker bldg so that we can avoid any material segragation. Please share your view & ideas.
SOMNATH KUNDU ■